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  1. Qt
  2. QTBUG-104651

Impact of C++20 std::format on our code

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    • C++20 std::format @ Qt

    Description

      C++20 added a new formatting library, roughly modelled after Python's. It supports user-defined types, user-defined formatting options, char and wchar_t, argument reordering, localization, and is based on format strings.

      This library impacts Qt APIs on two levels:

      1. enable Qt types for use with std::format
      2. replace our existing formatting (QString::arg(), QTest::toString(), QDebug stream operators) with std::format
        • it seems to have everything we need for localisation
        • except char16_t support
          • but maybe there's a way to extend the library with char16_t support?

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          Epic - Created by Jira Software - do not edit or delete. Issue type for a big user story that needs to be broken down. QTBUG-99243 Initiative: Qt and C++20

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Open

          User Story - Created by Jira Software - do not edit or delete. Issue type for a user story. QTBUG-109361 C++20 is required for the development and buiding of Qt itself (Phase II)

          • Not Evaluated - Not yet evaluated/prioritized
          • Open

          User Story - Created by Jira Software - do not edit or delete. Issue type for a user story. QTBUG-109360 Use C++20 code with Qt (Phase I)

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Open
          relates to

          Epic - Created by Jira Software - do not edit or delete. Issue type for a big user story that needs to be broken down. QTBUG-117055 Implement a generic internal framework for formats for parsing and serializing

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Open
          mentioned in

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              cnn Qt Core & Network
              mmutz Marc Mutz
              Vladimir Minenko Vladimir Minenko
              Alex Blasche Alex Blasche
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